Overview
The Black Phantom Tetra (Hyphessobrycon megalopterus) is a beginner freshwater species known for its dark gray, black coloration. Males display to each other. Mid.
Origin & Appearance
Origin: Bolivia/Brazil.
Colors: Dark Gray, Black.
Body Shape: Fusiform (torpedo/streamlined). Typical adult dimensions: 4.5 x 0.8 x 1.3.
Sexual Dimorphism: Strong; males darker with larger dorsal/anal fins.
Tank & Water Requirements
| Min Tank Size | 11 gallons |
| Temperature | 72–82°F |
| pH Range | 6–7.5 |
| Water Hardness (GH) | 2-12 |
| Bioload | low |
| Oxygen Demand | low |
| Plant Safe | yes |
| Aquarium Position | Mid |
Behavior & Activity
Mid-water swimmer; males face off with spread fins in ritualized sparring; otherwise calm gentle schooling
Speed: 42/100Aggression: 2/10diurnalSchooling (6+)
Breeding
Moderate; egg scatterer
Common Diseases
💊 Ich
Expert Notes
Males display to each other